b7/b7c/out/aurora-mm1-b7c.img: OK
16:30:49.020 B7C c7: uartlog PID 20686 -> logs/uart/b7c7-20261002-193049.log; waiting for fastboot <EMMC_SERIAL> (power off >= 90 s, then RESET held + battery -> USB)
16:35:21.539 fastboot device present
Sending 'boot.img' (20792 KB)                      FAILED (Write to device failed (Success))
fastboot: error: Command failed
rc=1